Read the docs
TI-2026-69847 Aliases CVE-2026-5759

Double free and use-after-free in FalkorDB RDB loading

Priority MEDIUM 49CWE-415Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-415 and the CVSS impact.

Summary

FalkorDB before 4.18.1 contains a double free and use-after-free flaw in the RdbLoadDeletedNodes function that loads RDB graph data (CWE-416). The length check on the deleted-nodes buffer relies on ASSERT(), which is compiled out of release builds, so the buffer is freed, read and freed again. A remote attacker who can issue Redis replication commands, for example against an instance with no password configured, can supply a crafted RDB stream to cause a denial of service or execute arbitrary code in the redis-server process.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

A double free and use-after-free vulnerability in the RdbLoadDeletedNodes function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.1 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service or execute arbitrary code in the redis-server process by supplying a crafted RDB stream whose deleted-nodes buffer length is not a multiple of sizeof(NodeID). The length check relies on ASSERT(), which is compiled out in release builds, so the function continues after freeing the buffer, reading it and freeing it a second time.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00554 46th percentileScored 2026-11-07
Fix Fixed FalkorDB (FalkorDB): 4.18.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FalkorDBFalkorDBbefore 4.18.14.18.1Patch availableCNA
  • FalkorDB VendorFalkorDB Affected before 4.18.1 Fixed in 4.18.1 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*——FalkorDB
  • cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:* Versions — — ·FalkorDB

Remediation

Upgrade FalkorDB to version 4.18.1, the fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA FalkorDB (FalkorDB) Fixed in 4.18.1

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-5759
  2. 2026-10-13 CISA SSVC decision points changed

References

Patch 2

Other 1

  • TI-2026-05312 Unauthenticated Path Traversal in FalkorDB Browser Leads to Remote Code Execution CVSS 3.1CRITICAL 9.8
  • TI-2026-69850 Heap out-of-bounds write in FalkorDB Bolt RESET handler CVSS 4.0CRITICAL 9.3
  • TI-2026-69851 Out-of-bounds write in FalkorDB Bolt WebSocket frame handling CVSS 4.0HIGH 8.8
  • TI-2026-08883 QueryWeaver Authentication Bypass via Email Signup Token Issuance for Existing Accounts CVSS 4.0HIGH 8.8
  • TI-2026-69848 Heap out-of-bounds read in FalkorDB via crafted RDB stream CVSS 4.0HIGH 8.8
  • TI-2026-69852 Authentication bypass in FalkorDB Bolt endpoint CVSS 4.0CRITICAL 9.2
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences